About Wire Numbers

Wire numbers are blocks or attributes inserted on a line wire entity. AutoCAD Electrical assigns each wire number type to its own layer. You can assign a different color to each of these layers so you can easily tell them apart. There are four types of wire numbers:

Normal	Wire numbers that are free to update when you rerun the Insert Wire Numbers command.
Fixed	Wire numbers that are fixed to their current value. They do not update with subsequent runs of the Insert Wire Numbers command.
Extra	Extra copies of the Normal or Fixed wire number that are assigned to a given wire network. A single wire network has one Normal or one Fixed wire number (but not both). It cannot have many extra copies of the wire number inserted at various locations on the network.
Terminal/Signal	Wire numbers for terminals and signal arrows.

Wire tag formats

The origin of a wire number block must lie on the wire segment, though the text attribute can move away from the wire. AutoCAD Electrical uses the concept of a wire tag format string with replaceable parameters. One replaceable parameter, %N, must always be part of the wire format string. A typical format string might be just this %N parameter.

Replaceable parameters for defining a default wire number tag format are:

%S	Sheet number of the drawing
%D	Drawing number
%N	Sequential or reference-based number applied to the component
%X	Suffix character position for reference-based tagging (not present = end of tag)
%P	IEC-style project code (default for drawing)
%I	IEC-style "installation" code (default for drawing)
%L	IEC-style "location" code (default for drawing)

Examples: Wire beginning on line reference "100" of sheet "02" yields these wire number tags for the following formats:

%N	wire number = 100
W%N	wire number = W100
%S-%N	wire number = 02-100
%S%N	wire number = 02100
%S : %N	wire number = 02:100